Hello. I would like understood why the immaculate conception dogma was formulate.
Actually in the sacred scriptures one can not to find something like that. And, even if there were popular beliefs in that sense, for many siecles Roma didn't approved it as dogma. Also very important saints and theologians as Saint Bernard, who is not suspected of heresy, refuted it.
But by XIX century something new happen: the girl Catherina Laboure had a Virgin Mary vision. In that vision the Virgin herself shows to the girl a patron for to make a medal which contained a pray confirming this dogma. Some years after that, as the medal was made and seem to be very miraculous, the dogma was approved.
Is an individual vision enought to establish a dogma? perhaps other considerations were involved .. which? Someone can teach me about it, or tell me where can I study the topic?
Thank you very much.
(Warning: I am not denying the dogma, just trying to understand how it was established)